Add:2x+6y+9z,6x-2y-3z,5x+4y-2z.
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Pahle hame same variables ke saath step likhna hai then sign change and last add with same variables
Step-by-step explanation:
Solu - 2x+ 5x+6x+6y+(-2y)+4y+(-3z)+(-2z)
= 2x+5x+6x+6y-2y+4y-3z-2z
= 13x+8y-5z
Ans = 13x+8y+5z
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